The Targum Pseudo-Jonathan on Exodus 14:15 catches a surprising reprimand. Moses is standing on the shore praying. God interrupts him: "Why standest thou praying before Me?"
It is a strange question. Is prayer ever wrong? The Targum's expansion makes the logic explicit: "Behold, the prayers of My people have come before thy own." The nation has already prayed. Their prayers have already arrived. Moses' prayer, however sincere, is now redundant.
Worse: it is delay. "Speak to the sons of Israel, that they go forward." The sea will not split while Moses stands with eyes closed. Israel must walk. Faith, in this moment, looks like motion.
The Targum's reading inverts a common assumption. We tend to imagine that the more one prays, the better. God's answer here is: there is a time for prayer and a time for stepping into the water. The people have already done the spiritual work. Now the leader must lead them into the miracle, not pray about it on the safe side of the bank.
This becomes the seed of a rabbinic principle: Israel is saved not by Moses' prayer but by the nation's prayer, and by their willingness to move. Tradition names Nachshon ben Amminadav (Sotah 37a) as the first to step in. The Targum is already pushing toward that moment.
Takeaway: the Targum teaches that some prayers are answered only when you stop praying and start walking.